When building with optimizations, emit thunks with available_externally linkage so devirtualized function calls can also be de-thunked.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@124984 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 9 insertions, 2 deletions

diff --git a/lib/CodeGen/CGVTables.h b/lib/CodeGen/CGVTables.h
index 3aee49372d..7c119fa422 100644
--- a/lib/CodeGen/CGVTables.h
+++ b/lib/CodeGen/CGVTables.h
@@ -183,8 +183,15 @@ class CodeGenVTables {
   void ComputeMethodVTableIndices(const CXXRecordDecl *RD);
 
   /// EmitThunk - Emit a single thunk.
-  void EmitThunk(GlobalDecl GD, const ThunkInfo &Thunk);
-  
+  void EmitThunk(GlobalDecl GD, const ThunkInfo &Thunk, 
+                 bool UseAvailableExternallyLinkage);
+
+  /// MaybeEmitThunkAvailableExternally - Try to emit the given thunk with
+  /// available_externally linkage to allow for inlining of thunks.
+  /// This will be done iff optimizations are enabled and the member function
+  /// doesn't contain any incomplete types.
+  void MaybeEmitThunkAvailableExternally(GlobalDecl GD, const ThunkInfo &Thunk);
+
   /// ComputeVTableRelatedInformation - Compute and store all vtable related
   /// information (vtable layout, vbase offset offsets, thunks etc) for the
   /// given record decl.